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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 1999 Yasuhiro Ohara
*/
#include <zebra.h>
#include <lib/version.h>
#include <lib/keychain.h>
#include <stdlib.h>
#include "getopt.h"
#include "frrevent.h"
#include "log.h"
#include "command.h"
#include "vty.h"
#include "memory.h"
#include "if.h"
#include "filter.h"
#include "prefix.h"
#include "plist.h"
#include "privs.h"
#include "sigevent.h"
#include "zclient.h"
#include "vrf.h"
#include "bfd.h"
#include "libfrr.h"
#include "ospf6d.h"
#include "ospf6_top.h"
#include "ospf6_message.h"
#include "ospf6_network.h"
#include "ospf6_asbr.h"
#include "ospf6_lsa.h"
#include "ospf6_interface.h"
#include "ospf6_zebra.h"
#include "ospf6_routemap_nb.h"
/* Default configuration file name for ospf6d. */
#define OSPF6_DEFAULT_CONFIG "ospf6d.conf"
/* Default port values. */
#define OSPF6_VTY_PORT 2606
/* ospf6d privileges */
zebra_capabilities_t _caps_p[] = {ZCAP_NET_RAW, ZCAP_BIND, ZCAP_SYS_ADMIN};
struct zebra_privs_t ospf6d_privs = {
#if defined(FRR_USER)
.user = FRR_USER,
#endif
#if defined FRR_GROUP
.group = FRR_GROUP,
#endif
#ifdef VTY_GROUP
.vty_group = VTY_GROUP,
#endif
.caps_p = _caps_p,
.cap_num_p = array_size(_caps_p),
.cap_num_i = 0};
/* ospf6d options, we use GNU getopt library. */
struct option longopts[] = {{0}};
/* Master of threads. */
struct event_loop *master;
static void __attribute__((noreturn)) ospf6_exit(int status)
{
struct vrf *vrf;
struct interface *ifp;
struct ospf6 *ospf6;
struct listnode *node, *nnode;
frr_early_fini();
bfd_protocol_integration_set_shutdown(true);
for (ALL_LIST_ELEMENTS(om6->ospf6, node, nnode, ospf6)) {
vrf = vrf_lookup_by_id(ospf6->vrf_id);
ospf6_delete(ospf6);
ospf6 = NULL;
FOR_ALL_INTERFACES (vrf, ifp)
if (ifp->info != NULL)
ospf6_interface_delete(ifp->info);
}
ospf6_message_terminate();
ospf6_asbr_terminate();
ospf6_lsa_terminate();
/* reverse access_list_init */
access_list_reset();
/* reverse prefix_list_init */
prefix_list_add_hook(NULL);
prefix_list_delete_hook(NULL);
prefix_list_reset();
vrf_terminate();
if (zclient) {
zclient_stop(zclient);
zclient_free(zclient);
}
ospf6_master_delete();
frr_fini();
keychain_terminate();
exit(status);
}
/* SIGHUP handler. */
static void sighup(void)
{
zlog_info("SIGHUP received");
}
/* SIGINT handler. */
static void sigint(void)
{
zlog_notice("Terminating on signal SIGINT");
ospf6_exit(0);
}
/* SIGTERM handler. */
static void sigterm(void)
{
zlog_notice("Terminating on signal SIGTERM");
ospf6_exit(0);
}
/* SIGUSR1 handler. */
static void sigusr1(void)
{
zlog_info("SIGUSR1 received");
zlog_rotate();
}
struct frr_signal_t ospf6_signals[] = {
{
.signal = SIGHUP,
.handler = &sighup,
},
{
.signal = SIGINT,
.handler = &sigint,
},
{
.signal = SIGTERM,
.handler = &sigterm,
},
{
.signal = SIGUSR1,
.handler = &sigusr1,
},
};
static const struct frr_yang_module_info *const ospf6d_yang_modules[] = {
&frr_filter_info,
&frr_interface_info,
&frr_route_map_info,
&frr_vrf_info,
&frr_ospf_route_map_info,
&frr_ospf6_route_map_info,
};
FRR_DAEMON_INFO(ospf6d, OSPF6, .vty_port = OSPF6_VTY_PORT,
.proghelp = "Implementation of the OSPFv3 routing protocol.",
.signals = ospf6_signals,
.n_signals = array_size(ospf6_signals),
.privs = &ospf6d_privs, .yang_modules = ospf6d_yang_modules,
.n_yang_modules = array_size(ospf6d_yang_modules),
);
/* Max wait time for config to load before accepting hellos */
#define OSPF6_PRE_CONFIG_MAX_WAIT_SECONDS 600
static void ospf6_config_finish(struct event *t)
{
zlog_err("OSPF6 configuration end timer expired after %d seconds.",
OSPF6_PRE_CONFIG_MAX_WAIT_SECONDS);
}
static void ospf6_config_start(void)
{
if (IS_OSPF6_DEBUG_EVENT)
zlog_debug("ospf6d config start received");
EVENT_OFF(t_ospf6_cfg);
event_add_timer(master, ospf6_config_finish, NULL,
OSPF6_PRE_CONFIG_MAX_WAIT_SECONDS, &t_ospf6_cfg);
}
static void ospf6_config_end(void)
{
if (IS_OSPF6_DEBUG_EVENT)
zlog_debug("ospf6d config end received");
EVENT_OFF(t_ospf6_cfg);
}
/* Main routine of ospf6d. Treatment of argument and starting ospf finite
state machine is handled here. */
int main(int argc, char *argv[], char *envp[])
{
int opt;
frr_preinit(&ospf6d_di, argc, argv);
frr_opt_add("", longopts, "");
/* Command line argument treatment. */
while (1) {
opt = frr_getopt(argc, argv, NULL);
if (opt == EOF)
break;
switch (opt) {
case 0:
break;
default:
frr_help_exit(1);
}
}
if (geteuid() != 0) {
errno = EPERM;
perror(ospf6d_di.progname);
exit(1);
}
/* OSPF6 master init. */
ospf6_master_init(frr_init());
/* thread master */
master = om6->master;
keychain_init();
ospf6_vrf_init();
access_list_init();
prefix_list_init();
/* initialize ospf6 */
ospf6_init(master);
/* Configuration processing callback initialization. */
cmd_init_config_callbacks(ospf6_config_start, ospf6_config_end);
frr_config_fork();
frr_run(master);
/* Not reached. */
ospf6_exit(0);
}
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